Yeah, I did it awhile ago. Nothing intellectually challenging, just a whole lot of frustrating pinpoint clicking, and a finger on the pause button.
And a lot of resets.
Theres really nothing to review; its a concept level, and the concept is pretty simple. Could use more decoration, and it could have been made a lot more interesting if more lemmings were included. The player would then be forced to make adjustments to the release rate during the building process in order to minimize losses. As it stand, you just pop it to 85 and click 25 times. Yawn.